Originally Posted by The Son of Anarchy
That's simply not true. While it may LOOK like you still have to pay for the last plane, if you click on it you'll be greeted with a message saying you already own this plane. I agree that the unlocking method (and the handling of all iap in general with 2015) is highly confusing. I'm not trying to argue here, just adding to the conversation my experience with this version and hopefully clearing some confusion for readers looking to disentangle the mess this thread has become.
I just bought this last night and played it all night. Pretty fun. Not sure I will bother with premium boosters though